Camera tricks are shown - film reversal of men diving in (then out) of a canal and pool.
This episode in the series is about camera tricks.
"Camera tricks are by no means as new as many of us think. In 1905 a little film called "The Fantastic Diver" amused our Parents." Film of a fully clothed man diving into a canal. Through film reversal we see him come out of the canal backwards - this time in a bathing suit. He dives in and out a few times. More of the same - this time a "modern" 1920s version of two men diving off a high board with lots of people watching. Short segment - probably incomplete.
See other parts of "The Evolution of the Film"
Was item in Pathe Pictorial issue number 534.